Editing Sinclair ZX Spectrum Keyboard Membrane Repair (section)

== Installing the Replacement Membrane ==
1. Insert the membrane into the support plate in the same orientation as the original. Ensure conductive pads lie flat and align over PCB contact areas.  

2. Route ribbon tails in a gentle “S-shape” to avoid strain; this is critical for Plus membranes.  

3. Seat tail ends fully and clamp; ensure clamps are neither loose nor overtightened.  

* For Spectrum+, confirm clamp assembly is correct—misalignment leads to extended key malfunctions.

4. Apply insulating tape if the ribbon tail contacts the RF modulator—this can cause failures even without electrical contact.